keller



Z'SIieets-Sheet 1.

(No Model.)

T. H. KELLER. TRIMMER FOR LING-TYPES. No. 576,584. Patented Feb. 9, 1897.

WITNESSES.-

(No Model.) 2 Sheets-Sheet 2. T. KELLER.

TRIMMER FOR LINOTYPES. No. 576,584. Patented Feb. 9, 1897.

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UNITED STATES PATENT ()FFICE.

THOMAS H. KELLER, OF NEW YORK, N. Y., ASSIGNOR TO THE MERGENTHALER LINOTYPE COMPANY, OF SAME PLACE.

TRIMMER FOR LINOTYPES.

SPECIFICATION forming part of Letters Patent No. 576,584, dated February 9, 1897. Application filed January 16, 1896. Serial No. 575,812. (No model.)

To all whom it may concern: looking from the interior of the machine for- Be it known that I, THOMAS H. KELLER, a ward in the direction in which the slugs are citizen of the United States, and a resident of ejected, as indicated by the arrow in Fig. 2. the city, county, and State of New York, have Fig. 2 is an inside view of the same, as incliinvented certain new and useful Improvecated by the arrow in Fig. 1. Fig. 3 is a horiments in Linotype-Machines, of which the folzontal cross-section on the correspondinglylowing is a correct description. numbered line of the preceding figure. Fig.

In linotype-machines of the'various forms 4 is a perspective view illustrating the handknownin the artatype-metal slugorbarbearlever and eccentric connections for moving IO ing on one edge type-characters to print a line the knife. 1 is cast in a mold from which it is driven for- Referring to the accompanying drawings, ward by an ejector-blade into a galley or rea C62 represent the two parallel upright knives, ceiver. During the passage from the mold of the customary form, applied to the inner to the galley the slug passes between two side of the vise-frame in such relation to the 15 parallel trimming-knives intended to remove mold B and the ejector-blade O that the slug 6 5 irregularities from the side faces of the slug as it is driven forward out of the mold will and reduce it to a uniform and predetermined pass between the knives. The knife a for thickness. trimming one side of the slug is bolted rig- It is customaryto change the molds and idly to the vise-frame, forming part of the 20 other parts in order that'the machine may main frame, as usual. produce type-faces of different sizes and slugs The knife a, adjustable toward and from of corresponding thicknesses. its companion, is held in place, as usual, by The change in the thickness of the slugs bolts 6, passing through horizontal slots or produced renders necessary a readjustment openings f in the vise-frame. The bolts are 25 of one of the trimming-knives with relation so adjusted as to hold the knife snugly to the to the other in order that the distance beface of the frame, while permitting it to be tween them may correspond precisely with moved forward and backward by a reasonthe thickness of the slug required. able application of force. Up to this point Heretofore the adjustment has been effectthe parts are of substantially the ordinary 30 ed by unbolting the knife and changing its construction. position, interchangeable liners or spacing- In applying my improvement I mount in blocks differing in thickness being used to bearings g, on the outside of the vise-frame, determine the distance between the knives. a rock-shaft h, such as shown in Fig. 4, hav- It is the object of the present invention to ing at the middle an operating-handle 1 and 35 provide for the instantaneous and accurate at the two ends eccentric wrists or journals adjustment of the knife without the necesm. On the respective wrists I mount two bars sity of removing or substituting parts. at, which are extended inward and mounted For purposes of illustration I have shown on the bolts e, which retain the knife. It my invention embodied in connection with follows from this arrangement that when the to an ordinary linotype-machine, such as reprerock-shaft is turned by means of its handle 0 sented in Letters Patent of the United States, the eccentric wrists are caused, through the No. 436,531, dated September 16, 1890, the bars n, to move the knife a inward or outdrawingsbeingrestricted to those parts which ward-that is to say, toward or away from are immediately associated with my improvethe knife a -according to the direction in i 5 ment. It is to be understood that in all other which the shaft is turned. It will be observed 5 respects the machine may be of ordinary conthat under this arrangement the movement struction and also that the invention is apof the handle serves to move the knife posiplicable to linotype-niachines of other forms. tively inward or outward, so that the distance Referring to the drawings, Figure 1 reprebetween the two knives may be changed to sents an inside face view of the vise-frame, dress the slug to any particular thickness re- I00 quired. In most cases the machines are used to produce slugs of two thicknesses only, and in order that the knife may be quickly and accurately adjusted to one or the other of these thicknesses I propose to provide stops of any suitable character to limit the inward and outward movement of the knife a. These stops are preferably adjustable, and in their most simple form will consist of the screws 0 tapped through ears 011 the frame behind the knife to limit its outward movement, and screws 1), tapped into the stationary knife a or other support to limit the inward move ment of the knife a. The movable knife will be held in its outward or backward position by the pressure of the slug. It will be securely held in its inner position by turning the rock-shaft until the eccentrics stand upon or past the center.

I believe myself to be the first to combine with a trimming-knife means for positively moving the same to and fro and stop devices for limiting its movement and the first to combine with an adjustable trimming-knife means for moving the same positively and for looking it in an adjusted position.

Having thus described my invention, what I claim is- 1. In a linotype-machine, a slug-trimming knife movable forward and backward, in com bination with stops to limit the movement in both directions, and mechanism for throwing the knife instantly from one position to another.

2. In a linotype-machine, the combination of a slug-trimmin g knife mounted to slide forward and backward, adjustable stops to limit its forward movement, and adjustable stops to limit its backward movement.

3. In a linotype-machine, a slug-trimming knife movable forward and backward, in combination with an eccentric arranged to move the same and to pass over the center for the purpose of holding the knife in its adjusted position. 7

In testimony whereof I have hereunto affixed my signature in the presence of two subscribing witnesses.

THOS. II. KELLER.

Witnesses:

WM. 0. WooLLEY, GEO. W. MILLER. 

